Which two (2) protocols are defined in the IPSEC standard?
A.
AH
B.
ESP
C.
GRE
D.
L2TP
Explanation:
IP Security (IPSec) is a suite of related protocols for cryptographically securing communications at the IP packet layer.IPSecconsists of two modes and two main protocols:
Transport and tunnel modes
The Authentication Header (AH) protocol for authentication and the Encapsulating Security Payload (ESP)
protocolfor encryption (and authentication)